JP2998986B2 - Absorbent articles - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an absorbent article such as a disposable diaper for adults (for adults).

[Conventional technology]

In conventional absorbent articles for infants, adults, incontinents or menstruation (hereinafter, represented by "disposable diapers"), an absorbent or absorbent material is used for the purpose of improving wearability and increasing the amount of excrement absorbed. A configuration in which the flap is folded or a configuration in which an elastic member is provided in the upper direction of the flap is known.

Above all, the folded configuration is a typical configuration of a disposable diaper because it can be relatively easily manufactured and processed, for example, Japanese Patent Application Laid-Open No. 49-93143,
JP-A-50-33044, JP-A-50-161347, JP-A-51-46245, JP-A-52-84041 and JP-A-57-210004, etc. is there. The disposable diaper described in each of these publications is a so-called box-pleated type diaper in which folded portions are provided on both side edges in the longitudinal direction to form pockets. It is intended to improve the absorbency, retention and sealability of the rubber.

[Problems to be solved by the invention]

However, since the conventional box-pleated disposable diaper is configured so that the folded-back absorber fits around the legs, excrement such as body fluid absorbed by the absorber in the relevant portion overflows to the surface. In addition, there is a problem that the bedding and the like are wetted and excrement leaks to give discomfort. In addition, since these disposable diapers are formed by folding the absorber to form a seal mechanism with the absorber, the seal mechanism is inferior in flexibility and hardly fits the wearer's body shape,
There was also a problem that it was difficult to follow changes in body shape during activities.

On the other hand, in the conventional disposable diaper having a folded portion on the side flap, the pocket is soft and the pocket collapses due to body pressure or a change in body shape during activity, and sometimes the side flap is folded inward to reduce the sealing performance. There were challenges.

As another disposable diaper, for example,
58-65002, JP-A-62-199802 and JP-A-6-2002
There are those described in JP-A-2-199806. The disposable diaper described in each of these publications has side flaps on both side edges in the longitudinal direction, and a folded portion is provided in the side flap to form a pocket, and both are described in each of the publications. Similarly, it is intended to improve the absorption, retention and sealing of excrement.

However, as described above, in the configuration in which the side flaps are provided with the folded portions and the pockets are formed, although excrement retention is excellent, the abdominal part of the wearer is formed flat, so that the wearer and the wearer can be excreted. However, there is a problem that the fit is poor.

That is, in general, a disposable diaper does not distinguish between men's and women's, and therefore, there is a problem that a male cannot obtain a sufficient fitting property due to a balance with a local male.

On the other hand, it is conceivable to manufacture the product for women and men separately, but in such a case, there is a problem that the cost is increased.

Therefore, an object of the present invention is to provide an absorbent article having a high fit and a low production cost.

[Means for solving the problem]

The present invention includes a main body having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber disposed between the two sheets, and the main body is provided on the abdomen of the wearer when worn. In the absorbent article forming the abdominal part located and the dorsal part located on the back side of the wearer when worn, the abdominal part has two sides extending outward in the width direction, respectively in the width direction. The first folded back to overlap the folded part on the center side
A pair of first folded portions having a folded portion, and a pair of second folded portions having a second folded portion in which both sides are further folded outward in the width direction. The second folded portions are spaced apart from each other on the widthwise center of the abdominal portion, and
The folded portion is fixed to the folded portion by first fixing means, and the back side portion has no folded portion, and is intended for an adult. As a result, the above object has been achieved.

[Action]

According to the above-described absorbent article, a conventional so-called flat-type absorbent article is used, and both sides of the abdominal portion are folded back to form a pair of first and second folded portions, and the first folded portion is formed. By simply fixing the portion to the folded portion at the center in the width direction, it is possible to easily manufacture an absorbent article that is suitable for male locals.

In addition, since it is a configuration in which a conventional so-called flat type absorbent article is simply folded back and fixed, an absorbent article for men can be manufactured at low cost.

〔Example〕

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The absorbent article of the present invention will be described using an adult disposable diaper as an example.

As shown in FIG. 1, the disposable diaper 1 includes a liquid-permeable top sheet 2 that forms a side in contact with the wearer's skin,
Liquid-impermeable backsheet 3 corresponding to topsheet 2
And an absorbent body 4 arranged between the two sheets 2 and 3 for absorbing excrement.

The top sheet 2 is preferably a liquid-permeable sheet that allows excrement to pass through the absorber 4 and has a feeling similar to underwear. Examples of such a liquid-permeable sheet include woven cloth, nonwoven cloth, and porous cloth. Films and the like are preferred. Also, a method of applying a hydrophobic compound such as a silicone oil agent or paraffin wax to the peripheral portion of the top sheet 2 or a method of applying a hydrophilic compound such as an alkyl phosphate ester in advance and washing the peripheral portion with warm water are used. By performing water treatment, it is possible to prevent leakage due to bleeding of urine and the like in the peripheral portion.

The back sheet 3 is made of a thermoplastic resin to which a filler is added and stretched, and a liquid-impermeable sheet having a permeable property to allow vapor to pass therethrough, or a sheet having a feeling similar to underwear, for example, a composite material or film of a film and a nonwoven fabric And a woven fabric.

The absorbent 4 is preferably composed mainly of defibrated pulp and used in combination with a high-molecular-weight water-absorbing polymer, and is preferably a mixture obtained by heat-treating a mixture of a thermoplastic resin, cellulose fibers, and a high-molecular-weight water-absorbing polymer. The location of the high-molecular-weight water-absorbing polymer may be any of an upper phase, a middle phase, and a lower phase, and may be a mixture with pulp. The high-molecular water-absorbing polymer has a holding performance capable of absorbing and holding a liquid 20 times or more its own weight, and is preferably in the form of particles having a gelling property. Starch-acrylic acid (salt) graft copolymer, saponified starch-acrylonitrile copolymer,
A crosslinked product of sodium carboxymethyl cellulose, an acrylic acid (salt) polymer and the like are preferable. The shape is preferably an hourglass shape that matches the body shape of the wearer, but may be rectangular.

The main body 5 is formed in a substantially H-shape in which the center in the longitudinal direction (vertical direction in the figure) is constricted, a crotch 6 is formed in a constricted portion, and the belly of the wearer is worn on one wide portion when worn. An abdominal part 7 located on the side is formed. On the other wide part, a back part 8 located on the back of the wearer is formed.

Waist flaps 9 and 10 extending outward from the absorber 4 are formed at both longitudinal ends of the main body 2 on the abdomen 7 and the back 8, respectively. A pair of left and right side flaps 11 and 12 are formed on one side. In addition, the crotch part 6 has leg portions 13 on the left and right sides outside in the width direction.
Are formed.

On the back part 8, a tape fastener 19 is provided on each of a pair of left and right side flaps 12, 12, and the tape fastener 19 is joined to the side flaps 11, 11 on the abdominal part when worn. .

In the abdomen 7, folded portions are formed on both sides (including the side flaps 11) 14 a and 14 b extending outward in the width direction. That is, the first folded portions 16a and 16b having the first folded portions 15a and 15b folded so as to overlap the folded portions 7a and 7b are provided on both sides 14a and 14b of the abdominal portion 7.
And second folded portions 18a and 18b having second folded portions 17a and 17b folded so as to overlap the first folded portions 16a and 16b. First folded portion 16
a and 16b are folded back toward the center in the width direction.
The folded portions 16a and 16b are substantially on the extension of both side edges of the crotch part 6.

Further, in the center direction of the width direction of each of the second folded portions 18a and 18b, second folded portions 18a and 18b for folding the both side portions 14a and 14b outward again are formed separately from each other.

Therefore, the first folded portions 16a, 16b and the second folded portions 18a, 18b cause the side portions 14a, 14b of the ventral portion 7 to be
A part thereof is overlapped at the folded-back portions 7a and 7b on the center side in the width direction, and the side flaps 11 and 11 on the ventral side are respectively extended outward. As a result, as shown in FIG. 1, when the disposable diaper according to the present embodiment is deployed, the width of the abdominal part 7 is shorter than the width of the back part 8.

Further, as shown in FIG. 2, the first folded portions 15a,
15b is a hot melt 20a, 20b as a first fixing means.
As a result, they are attached to the folded portions 7a and 7b in the vicinity of the second folded portions 18a and 18b, respectively. Thereby, the folded state of the first folded portions 16a and 16b is reliably fixed.

The second folded portions 17a and 17b are joined to the first folded portions 16 by hot melts 21a and 21b as second fixing means.
Adhered on the first folded portions 15a and 15b in the vicinity of a and 16b. Thereby, the second folded portions 18a, 18b
Is securely fixed.

By forming the first and second folded portions 16a, 16b, 18a, and 18b on the abdominal part 7 of the main body, the diaper main body 5 is formed into a shape corresponding to a local part of a male, and has excellent fit. Diapers can be provided.

FIG. 3 shows a conventional adult disposable diaper 22. In other words, the disposable diaper 22 shown in FIG. 3 is an intermediate product of the present embodiment, and the conventional disposable diaper 22 shown in FIG. From 22, the disposable diaper 1 according to the present embodiment is manufactured in the above-described steps by folding and bonding.

That is, the conventional adult disposable diaper shown in FIG.
As described above, the abdominal portion 7 is folded back and adhered to manufacture the disposable diaper for men of the present embodiment.

The present invention is not limited to the above-described embodiment,
Various modifications can be made without departing from the spirit of the present invention.

For example, the first and second fixing means are not limited to using a hot melt, but may be an ultrasonic wave, an adhesive or the like.

Further, as shown in FIG. 4, the first and second fixing means may be so-called target tapes 25 provided on the abdomen of the back sheet 3. That is, the target tape 25 is provided on the back sheet 3 on the back side of the diaper, and the second folded portions 16a and 16b are bonded and fixed by the target tape 25.

The first and second folded portions are fixed at one point in each of the above-described embodiments. However, the present invention is not limited to this, and a similar effect can be obtained even if the plurality of points or lines are adhered. it can.

Regarding the fixing of these folded portions, if a fixing portion is further provided near the edge, the pocket is deepened, and the leakage prevention effect is improved.

Further, in the above-described embodiment, an example in which the first or second folded portion is parallel is shown. However, in order to further prevent leakage from the front portion, as shown in FIGS. The space H between the first and second folded portions may be gradually narrowed as it extends outward in the longitudinal direction of the absorbent article. In the modified example shown in FIG. 5, the first folded portion is folded obliquely, and in the modified example shown in FIG. 6, the first and second folded portions are folded obliquely. It is.

〔The invention's effect〕

The absorbent article of the present invention has a high fit and a low production cost.

[Brief description of the drawings]

FIG. 1 is a plan view of a disposable diaper according to an embodiment of the present invention, FIG. 2 is an enlarged perspective view showing a folded portion, and FIG.
The drawings are plan views showing a conventional disposable diaper, and FIGS. 4 to 6 are plan views each showing a disposable diaper according to a modification of the present embodiment. 1; Disposable diaper (absorbent article) 2; Topsheet, 3; Backsheet 4; Absorbent, 5; Main body 7; Abdomen 7a, 7b; Folded portion 8; Backside 15a, 15b; Folded portions 16a, 16b; first folded portions 17a, 17b; second folded portions 18a, 18b; second folded portions 20a, 20b; hot melt (fixing means)

Claims (5)

(57) [Claims] 1. A body having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber disposed between the two sheets, wherein the body is abdominal of a wearer when worn. In the absorbent article forming the abdomen located at the back and the back part located at the back of the wearer when worn, the abdomen has a width extending on both sides extending outward in the width direction. A pair of first folded portions having a first folded portion folded so as to overlap the folded portion on the center side in the direction, and a second folded portion further folded back on both sides toward the outside in the width direction. And a pair of second folded portions, wherein the pair of second folded portions are spaced apart from each other on the widthwise center side of the abdominal portion, and the first folded portion is the folded portion. First
An absorbent article characterized by being fixed by the fixing means of (1), wherein the dorsal side does not have a folded part and is for adults. 2. The absorbent article according to claim 1, wherein said second folded portion is fixed to said first folded portion by a second fixing means. 3. The second fixing means is a target tape attached to the abdominal portion of the back sheet for fastening the tape fasteners provided on both back side portions of the absorbent article. The absorbent article according to claim 2, wherein: 4. The distance between the pair of first folded portions is
The absorbent article according to any one of claims (1) to (3), wherein the absorbent article is formed so as to be gradually narrowed outward in the longitudinal direction of the absorbent article. 5. A space between the pair of second folded portions,
The absorbent article according to any one of claims (1) to (4), wherein the absorbent article is formed so as to be gradually narrowed outward in the longitudinal direction of the absorbent article.